CN211010111U - Gas combination valve with dry burning prevention function - Google Patents
Gas combination valve with dry burning prevention function Download PDFInfo
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- CN211010111U CN211010111U CN201921826220.4U CN201921826220U CN211010111U CN 211010111 U CN211010111 U CN 211010111U CN 201921826220 U CN201921826220 U CN 201921826220U CN 211010111 U CN211010111 U CN 211010111U
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Abstract
The utility model discloses a gas combination valve of dry combustion method function is prevented in area, include: the gas inlet channel, the gas outlet channel, the thermal expansion valve component and the flameout protection switch valve are arranged on the gas inlet channel; the thermostatic expansion valve assembly comprises an expansion valve body, an expansion valve spool and a temperature sensing bulb arranged on a heated object, wherein an expansion valve cavity is arranged in the expansion valve body, a medium in the temperature sensing bulb can drive the expansion valve spool to move when being heated and expanded, the flameout protection switch valve closes an air inlet channel or an air outlet channel when flame of the gas burner is extinguished, and when the heated object is burnt dry and reaches a certain temperature, the medium in the temperature sensing bulb drives the expansion valve spool to move to a position for closing the thermostatic expansion valve assembly so as to cut off an air source and extinguish the flame, thereby preventing accidents; meanwhile, the flameout protection switch valve cuts off the gas source after the flame is extinguished, so that the gas leakage caused by the gas source opened by the thermal expansion valve component after the temperature of the heated object and the temperature sensing bulb is reduced can be avoided, and the use safety of the gas equipment is further improved.
Description
Technical Field
The utility model relates to a gas equipment field, in particular to gas combination valve of dry combustion method function is prevented in area.
Background
At present, gas equipment such as gas cookers or gas water heaters is commonly used, in order to improve the safety of the use of the gas equipment, the gas equipment is basically provided with a flameout protection control assembly, and the function of closing a gas channel in flameout is realized through a thermocouple or a probe and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a gas combination valve of dry combustion method function is prevented in area.
The utility model provides a technical scheme that its technical problem adopted is:
a gas combination valve with dry burning prevention function comprises: the gas inlet channel, the gas outlet channel, the thermal expansion valve component and the flameout protection switch valve are arranged on the gas inlet channel; the thermal expansion valve assembly comprises an expansion valve body, an expansion valve spool and a temperature sensing bulb arranged on a heated object, an expansion valve cavity connected with an air inlet channel or an air outlet channel is arranged in the expansion valve body, the expansion valve spool is movably arranged in the expansion valve cavity, a medium in the temperature sensing bulb can drive the expansion valve spool to move when heated and expanded, and the flameout protection switch valve can be connected with a flameout protection control assembly of the gas equipment and closes the air inlet channel or the air outlet channel when flame of a gas burner is extinguished.
One of the above technical solutions has at least one of the following advantages or beneficial effects: when the heated objects (such as a cooker and a heating water pipe of a water heater) are burnt dry, when the heated objects and the temperature sensing bulb reach a certain temperature, the medium in the temperature sensing bulb drives the valve core of the expansion valve to move to the position for closing the thermal expansion valve component, so that the air inlet channel or the air outlet channel is closed, the air source is cut off, flames are extinguished, and accidents are prevented; meanwhile, the flameout protection switch valve also closes the gas inlet channel or the gas outlet channel to cut off the gas source after the flame is extinguished, so that the gas leakage caused by the gas source opening of the thermal expansion valve component after the temperature of the heated object and the temperature sensing bulb is reduced (medium shrinkage) can be avoided, and the use safety of the gas equipment is further improved.
In some embodiments, the valve element of the expansion valve comprises a plugging piece which is slidably disposed in a valve cavity of the expansion valve and can plug the valve cavity of the expansion valve, a driving cylinder and a piston piece which is slidably matched with the driving cylinder are disposed on the plugging piece, the piston piece is fixedly connected with the valve body of the expansion valve, the thermal bulb is communicated to the driving cylinder, and a medium in the thermal bulb expands when heated to push the driving cylinder and the plugging piece to move, so that the expansion driving function is achieved, and the structure is compact.
In some embodiments, the thermal bulb is connected to the piston member through a connecting pipe and communicated into the driving cylinder through the piston member, so that the medium in the thermal bulb is communicated into the cylinder body, and the structural layout is reasonable.
In some embodiments, a compression spring is disposed between the plugging member and the expansion valve body, and the compression spring can provide an elastic force for the plugging member to drive the plugging member to a position for plugging the expansion valve cavity, so as to assist the plugging member in plugging the expansion valve cavity, so as to maintain a good closing performance of the expansion valve cavity, and ensure a normal dry-burning prevention function.
In some embodiments, a step structure is arranged in the expansion valve chamber, and the plugging piece can move to be matched with the step structure to plug the expansion valve chamber, so that the expansion valve chamber has better sealing performance.
In some embodiments, the lower end of the blocking piece is provided with a guide post, and the expansion valve cavity is internally provided with a guide hole matched with the guide post, so as to ensure the moving precision of the blocking piece and ensure the better closing performance of the blocking piece.
In some specific embodiments, the flameout protection switching valve includes a solenoid valve disposed on the air inlet passage, and the solenoid valve closes the air inlet passage when the flame of the gas burner is extinguished, thereby implementing flameout protection.
In some specific embodiments, the gas flow control valve assembly is further included, and the gas flow control valve assembly can control the gas flow between the gas inlet channel and the gas outlet channel, so that the flame size is adjusted, the thermal expansion valve, the flameout protection switch valve and the gas flow control valve are integrated, and the structural compactness is improved.
In some embodiments, the gas flow control valve assembly comprises a flow control valve body and a valve core arranged in the flow control valve body, the flameout protection switch valve comprises a solenoid valve, an elongated valve cavity is arranged in the flow control valve body, the valve core is arranged at the front end of the elongated valve cavity, the solenoid valve is arranged at the rear end of the elongated valve cavity, an air inlet is arranged in the middle of the elongated valve cavity, the solenoid valve can cut off the communication state between the air inlet and the front end of the elongated valve cavity, the thermostatic expansion valve assembly comprises an expansion valve body arranged at the air inlet and an expansion valve core arranged in the expansion valve body, the air inlet channel is arranged on the expansion valve body, the expansion valve core can cut off the communication state between the air inlet channel and the air inlet, and the air outlet channel is arranged at one side of the front end of the flow control valve, the valve core can control the air outlet flow of the air outlet channel, the thermostatic expansion valve, the electromagnetic valve, the air inlet channel and the air outlet channel are integrated into a whole by utilizing the flow control valve body, the structure is compact and reasonable, and the maintenance and debugging are convenient.
In some embodiments, the electromagnetic valve is disposed at the rear end of the flow control valve body, the valve core is disposed at the front end of the flow control valve body, the thermal expansion valve assembly is disposed at one side of the flow control valve body, and the air outlet channel is disposed at the other side of the flow control valve body, so that the installation space is fully utilized, the space occupied by the combination valve is reduced, and the installation and maintenance are convenient.
Drawings
The present invention will be further described with reference to the accompanying drawings and examples;
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention;
fig. 3 is an exploded view of an embodiment of the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
As shown in fig. 1, a gas combination valve with dry burning prevention function includes: the air inlet channel 11, the air outlet channel 12, the thermal expansion valve component 2 and the flameout protection switch valve; the thermostatic expansion valve assembly 2 comprises an expansion valve body 22, an expansion valve spool 23 and a temperature sensing bulb 21 arranged on a heated object, wherein an expansion valve cavity 24 connected with the air inlet channel 11 or the air outlet channel 12 is arranged in the expansion valve body 22, the expansion valve spool 23 is movably arranged in the expansion valve cavity 24, a medium in the temperature sensing bulb 21 can drive the expansion valve spool 23 to move when heated and expanded, and the flameout protection switch valve can be connected with a flameout protection control assembly of the gas equipment and can close the air inlet channel 11 or the air outlet channel 12 when flame of a gas burner is extinguished.
When the heated object (such as a cooker and a heating water pipe of a water heater) is burnt dry, when the heated object and the temperature sensing bulb 21 reach a certain temperature, the medium in the temperature sensing bulb 21 drives the expansion valve spool 23 to move to the position for closing the thermostatic expansion valve assembly 2, so that the air inlet channel 11 or the air outlet channel 12 is closed, an air source is cut off, flames are extinguished, and accidents are prevented; meanwhile, the flameout protection switch valve also closes the gas inlet channel 11 or the gas outlet channel 12 to cut off the gas source after the flame is extinguished, so that the gas leakage caused by the gas source opening of the thermal expansion valve component 2 after the temperature of the heated object and the temperature sensing bulb 21 is reduced (medium shrinkage) can be avoided, and the use safety of the gas equipment is further improved.
In some embodiments, as shown in fig. 2 and fig. 3, the valve core 23 of the expansion valve includes a plugging member 231 slidably disposed in the expansion valve cavity 24 and capable of plugging the expansion valve cavity 24, a driving cylinder 232 and a piston member 233 slidably engaged with the driving cylinder 232 are disposed on the plugging member 231, the piston member 233 is fixedly connected with the expansion valve body 22, the thermal bulb 21 is communicated to the driving cylinder 232, and a medium in the thermal bulb 21 expands when heated to push the driving cylinder 232 and the plugging member 231 to move, so as to achieve the function of expansion driving, and the structure is compact.
Of course, in the implementation process, a cylinder may be disposed in the expansion valve body 22, a piston is disposed in the cylinder, the piston is connected to the blocking member 231, and the bulb 21 is connected to the cylinder, so as to achieve the driving function of the blocking member 231, which will not be described in detail herein.
In some embodiments, as shown in fig. 2 and 3, the thermal bulb 21 is connected to the piston member 233 through a connecting pipe 211 and communicated into the driving cylinder 232 through the piston member 233, so that the medium in the thermal bulb 21 is communicated into the cylinder body, and the structural layout is reasonable.
In some embodiments, as shown in fig. 2 and 3, a compression spring 234 is disposed between the blocking piece 231 and the expansion valve body 22, and the compression spring 234 can provide an elastic force for the blocking piece 231 to drive the blocking piece 231 to a position for blocking the expansion valve cavity 24, so as to assist the blocking piece 231 to block the expansion valve cavity 24, so as to maintain a better closing performance thereof, and ensure a normal dry burning prevention function.
In some embodiments, as shown in fig. 2 and 3, a step structure 241 is disposed in the expansion valve chamber 24, and the blocking member 231 can move to cooperate with the step structure 241 to block the expansion valve chamber 24, so as to have a better sealing performance.
In some embodiments, as shown in fig. 2 and 3, the lower end of the blocking member 231 is provided with a guiding post 235, and the expansion valve chamber 24 is provided with a guiding hole 242 matching with the guiding post 235, so as to ensure the moving accuracy of the blocking member 231 and ensure its better closing performance.
In some embodiments, as shown in fig. 2 and 3, the flameout protection switching valve includes a solenoid valve 31 disposed on the air inlet channel 11, and when the flame of the gas burner is extinguished, the flameout protection control assembly of the gas appliance can control the solenoid valve 31 to close the air inlet channel 11, so as to realize flameout protection.
In a specific implementation process, the flameout protection control assembly of the gas equipment may include a thermocouple or a flame probe disposed at a position of the flame and a controller connected to the thermocouple or the flame probe, when the thermocouple or the flame probe detects that the flame is extinguished, the controller may control the electromagnetic valve 31 to close, thereby implementing flameout protection, the flameout protection control assembly of the gas equipment is common in the field of the gas equipment, and a specific control principle thereof is not described in detail herein.
Of course, in the implementation process, the flameout protection switch valve may also be a mechanical valve or a mechanical switch valve driven by a motor, such as a plunger valve, a ball valve, etc., and will not be described in detail herein.
In some embodiments, as shown in fig. 2 and 3, the gas flow control valve assembly 4 is further included, and the gas flow control valve assembly 4 can control the gas flow between the gas inlet channel 11 and the gas outlet channel 12, so as to adjust the flame size, and integrate the thermal expansion valve and the flameout protection switch valve with the gas flow control valve, thereby improving the structural compactness.
In some embodiments, as shown in fig. 3, the gas flow control valve assembly 4 includes a flow control valve body 41 and a valve core 42 disposed in the flow control valve body 41, and the flow rate is adjusted by adjusting the position of the valve core 42.
Of course, in the implementation, the valve core 42 may be a plug valve core (conical or truncated cone shape) or a ball valve core, and will not be described in detail herein.
In some embodiments, as shown in fig. 2 and 3, the flameout protection switch valve includes a solenoid valve 31, an elongated valve cavity is disposed in a flow control valve body 41, a valve core 42 is disposed at a front end of the elongated valve cavity, the solenoid valve 31 is disposed at a rear end of the elongated valve cavity, an air inlet 431 is disposed in a middle portion of the elongated valve cavity, the solenoid valve 31 is capable of cutting off a communication state between the air inlet 431 and the front end of the elongated valve cavity, the thermostatic expansion valve assembly 2 includes an expansion valve body 22 disposed at the air inlet 431 and an expansion valve core 23 disposed in the expansion valve body 22, the air inlet channel 11 is disposed on the expansion valve body 22, the expansion valve core 23 is capable of cutting off a communication state between the air inlet channel 11 and the air inlet 431, the air outlet channel 12 is disposed at a side of the front end of the flow control valve body 41, the valve core 42 is capable of, The electromagnetic valve, the air inlet channel 11 and the air outlet channel 12 are integrated, the structure is compact and reasonable, and the maintenance and debugging are convenient.
In some embodiments, as shown in fig. 2 and 3, the electromagnetic valve 31 is disposed at the rear end of the flow control valve body 41, the valve core 42 is disposed at the front end of the flow control valve body 41, the thermostatic expansion valve assembly 2 is disposed at one side of the flow control valve body 41, and the air outlet channel 12 is disposed at the other side of the flow control valve body 41, so that the installation space is fully utilized, the space occupied by the combined valve is reduced, and the installation and maintenance are convenient.
In some embodiments, as shown in FIG. 2, a screen 432 is provided at the inlet 431 to reduce accidental access into the flow control valve.
It is readily understood by those skilled in the art that the above-described preferred modes can be freely combined and superimposed without conflict.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge range of those skilled in the art.
Claims (10)
1. Gas combination valve of dry combustion method function is prevented in area, its characterized in that includes:
an intake passage (11);
an outlet channel (12);
the heating power expansion valve assembly (2), the heating power expansion valve assembly (2) includes an expansion valve body (22), an expansion valve spool (23) and a temperature sensing bulb (21) arranged on a heated object, an expansion valve cavity (24) connected with an air inlet channel (11) or an air outlet channel (12) is arranged in the expansion valve body (22), the expansion valve spool (23) is arranged in the expansion valve cavity (24), and a medium in the temperature sensing bulb (21) can drive the expansion valve spool (23) to move when being heated and expanded;
a flameout protection switch valve which can be connected with a flameout protection control assembly of the gas equipment and closes the gas inlet channel (11) or the gas outlet channel (12) when the flame of the gas burner is extinguished.
2. The gas combination valve with dry burning prevention function according to claim 1,
the expansion valve core (23) comprises a plugging piece (231) which is arranged in the expansion valve cavity (24) in a sliding mode and can plug the expansion valve cavity (24), a driving cylinder (232) and a piston piece (233) which is in sliding fit with the driving cylinder (232) are arranged on the plugging piece (231), the piston piece (233) is fixedly connected with the expansion valve body (22), the temperature sensing bulb (21) is communicated into the driving cylinder (232), and a medium in the temperature sensing bulb (21) can push the driving cylinder (232) and the plugging piece (231) to move after being heated and expanded.
3. The gas combination valve with dry burning prevention function according to claim 2,
the bulb (21) is connected to the piston part (233) via a connecting tube (211) and communicates through the piston part (233) into a drive cylinder (232).
4. The gas combination valve with dry burning prevention function according to claim 2,
a compression spring (234) is arranged between the blocking piece (231) and the expansion valve body (22), and the compression spring (234) can provide an elastic force for driving the blocking piece (231) to the position for blocking the expansion valve cavity (24) for the blocking piece (231).
5. The gas combination valve with dry burning prevention function according to claim 2,
a step structure (241) is arranged in the expansion valve cavity (24), and the plugging piece (231) can move to be matched with the step structure (241) to plug the expansion valve cavity (24).
6. The gas combination valve with dry burning prevention function according to claim 2,
the lower end of the blocking piece (231) is provided with a guide post (235), and a guide hole (242) matched with the guide post (235) is arranged in the expansion valve cavity (24).
7. The gas combination valve with dry burning prevention function according to claim 1,
the flameout protection switching valve comprises an electromagnetic valve (31) arranged on the air inlet channel (11).
8. The gas combination valve with dry burning prevention function according to claim 1,
the gas flow control valve assembly (4) is further included, and the gas flow control valve assembly (4) can control the gas flow between the gas inlet channel (11) and the gas outlet channel (12).
9. The gas combination valve with dry burning prevention function according to claim 8,
the fuel gas flow control valve assembly (4) comprises a flow control valve body (41) and a valve core (42) arranged in the flow control valve body (41).
10. The gas combination valve with dry burning prevention function according to claim 9,
the flameout protection switch valve comprises an electromagnetic valve (31), a long valve cavity is arranged in a flow control valve body (41), a valve core (42) is arranged at the front end of the long valve cavity, the electromagnetic valve (31) is arranged at the rear end of the long valve cavity, an air inlet (431) is arranged in the middle of the long valve cavity, the electromagnetic valve (31) can cut off the communication state between the air inlet (431) and the front end of the long valve cavity, a thermal expansion valve component (2) comprises an expansion valve body (22) arranged at the air inlet (431) and an expansion valve core (23) arranged in the expansion valve body (22), an air inlet channel (11) is arranged on the expansion valve body (22), the expansion valve core (23) can cut off the communication state between the air inlet channel (11) and the air inlet (431), and an air outlet channel (12) is arranged on one side of the flow control valve body (41), the valve core (42) can control the outlet air flow of the outlet air channel (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921826220.4U CN211010111U (en) | 2019-10-28 | 2019-10-28 | Gas combination valve with dry burning prevention function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921826220.4U CN211010111U (en) | 2019-10-28 | 2019-10-28 | Gas combination valve with dry burning prevention function |
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| Publication Number | Publication Date |
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| CN211010111U true CN211010111U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921826220.4U Active CN211010111U (en) | 2019-10-28 | 2019-10-28 | Gas combination valve with dry burning prevention function |
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| CN (1) | CN211010111U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725999A (en) * | 2019-10-28 | 2020-01-24 | 中山市福润德燃气具有限公司 | Gas combination valve with dry burning prevention function |
-
2019
- 2019-10-28 CN CN201921826220.4U patent/CN211010111U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725999A (en) * | 2019-10-28 | 2020-01-24 | 中山市福润德燃气具有限公司 | Gas combination valve with dry burning prevention function |
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